Deliberation some of indicators of immunity and intestinal bacterial flora of rainbow trout fry (Oncorhynchus mykiss) fed with prebiotic yeast cell wall (Saccharomyces cerevisia)
Subject Areas : New Technologies in Aquaculture Development
Keywords: Prebiotic, Yeast Cell Wall (Saccharomyces cerevisia), Keywords: Rainbow trout (Oncorhynchus mykiss), Immunological index, The intestinal bacterial flora,
Abstract :
Abstract[1] Rainbow trout farmed fish is one of the most critical situation is in the early stages of growth. In this study, the cell wall of yeast Saccharomyces cerevisia added prebiotic dietary factors at different levels of immunity and intestinal bacterial flora were used. In the study, 120 rainbow trout fry with the average weight of 3.61±0.12 gr containing 100 liters volume fiberglass tub were randomly distributed into 12 tanks and were reared. An experiment to determine the optimum level of prebiotic effect of dietary yeast cell wall in the diet of rainbow trout fry in 1% prebiotic treatments, 1.5% prebiotic, 2% prebiotic prebiotic-free control, in a balanced design with three replications each were studied. The results showed that non-specific immune parameters in blood, such as lysozyme and specific immune such as IgM and Ig had statistically significant difference between treatment groups fed with 2% prebiotic yeast cell wall with other treatments and controls (P<0.05). The intestinal bacterial flora of fishes on MRS agar and TSA were no significant differences between treatment (P>0.05). But in the mean bacterial count was treated with 2% higher than the control and other treatments. Therefore, based on these results it can be stated that the level of 2% prebiotic cell wall of yeast used in the diet caused a significant increase in bacterial flora and immune parameters studied, an important role in the safety of rainbow trout fry plays. * Corresponding Authors; Email: mohammadeatisamipour@gmail.com
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